VC1:Noise when turned off, how to open case?

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Home Forums Ask Ted VC1:Noise when turned off, how to open case?

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  • #15311
    Avatararegularjoe
    Participant

      Hi Ted,

      Fist off, thanks for the amazing gear. Love the old school JoeMeek stuff. Second, Thanks for making yourself accessable via this forum!

      I just bought a VC1 (v2.01), the first of a few planned vintage JM purchases. 2 Questions:

      1) When I shut it down, there is an audible hum and a secondary clicky or oscillating sound coming out of the balanced outputs. It fades out like maybe a capacitor is discharging. Is this normal? Is it a sign of caps going bad?

      2) I took out the six screws that hold the back to the front panel, but it did not easily come off. I need to replace al the XLR jacks ( they are loose and/or broken and need repair). I did not want to force the back off of the unit. Any tips on getting it open safely?

      Thank you for any input you can offer.

      All the best,

      Chris

      #15929
      Ted FletcherTed Fletcher
      Keymaster

        The VC1 lid has the three self-tap screws on each end but in addition, I seem to remember that the XLR connectors are a ‘Switchcraft’ type that have a locking catch that is accessible through the central hole in the socket. These things are very fiddly and you do need a very good slender flat-blade screwdriver to get to them. To undo the catches the little ‘key’ has to be rotated anti-clock only about 1/8th of a turn. Once released, the top cover slides off…. sometimes it takes some effort!

        On all later models I used a much simpler ‘Cliff’ type XLR connector that was secured with self-tap screws the same as the ends.

        On the funny noise….. I don’t think it’s significant as long as it works OK with the power on. It could indicate that there is a ground loop in your system , but if it’s working OK don’t worry! No, avoid replacing caps unless it’s really necessary. It’s usually a waste of time and effort. ;)

        #15930
        Avatararegularjoe
        Participant

          Thanks Ted,

          As it turns out, on my unit, a VC-1 v2.01, the nuts and washers for the rear 1/4″ jacks need to come off as well…

          #15931
          Ted FletcherTed Fletcher
          Keymaster

            Ha! I should have mentioned that!

            On all the later models we did not fit the nuts and washers on the jack sockets :(

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